122 



peapled by the other species of this genus. It is very perplexing that this 

 form has not yet been recorded from Sweden, the Ostracod Fauna of which 

 has been so thoroughly investigated both by earlier and recent authors. 

 Probably it has been overlooked, owing to its external resemblance to C. affinis. 

 Distribution. British Isles (Brady), France (Monier). 



Gen. 21. Cyprinotus, Brady, 1885. 



Generic Characters. Shell compressed, more or less gibbously arched 

 dorsally, with the valves conspicuously unequal, the left overlapping the right 

 anteriorly and also somewhat dorsally, right valve with the free edges in their 

 whole extent minutely tuberculated. Antennae well adapted for swimming and, 

 like the mandibles, of normal structure. Maxillae with the masticatory lobes 

 less attenuated than in the preceding genus. Maxillipeds and legs about as 

 in that genus. Caudal rami however far less powerfully developed. Copulative 

 appendages of male resembling in shape those in Cypricercus. Ejaculatory 

 tubes with numerous whorls of radiating spikes, proximal extremity truncate. 



Remarks. This genus was established in the year 1885 by Brady, to 

 include a Ceylon species C. cingalensis, distinguished by a most unusual 

 dorsal gibbosity of the shell. Two Australian species, with the dorsal gib- 

 bosity of the shell less strongly marked, but otherwise agreeing with the type, 

 were subsequently described by the present author, one of them, C. dentato- 

 marginatus, having previously been recorded by Brady from India as a species 

 of Cypris. The 2 Northern species described below are unquestionably refer- 

 able to the present genus in the restriction here adopted. 



46. Cyprinotus salinus (Brady). 



(Pi. LVI, fig. i). 



Cypris salina, Brady, Monograph of British Ostracoda, p. 368, PI. XXVI, figs. 81 

 Syn: Cypris strigata, Baird (not O. Fr. Miiller). 

 prasina, Brady & Norm, (not Fischer). 



Eucypris palcermitana, Daday. 



Specific Characters. Female. Shell, seen laterally, broadly oval in shape, 

 greatest height in the middle and almost attaining 2 /s of the length, dorsal 

 margin boldly arched, ventral slightly sinuated, anterior extremity somewhat 

 deflexed and obliquely rounded, posterior conspicuously produced, forming 

 below a rounded expansion defined above by a slight concavity of the dorsal 

 margin; seen dorsally, oblong ovate in outline, with the greatest width behind 



